The report provides a detailed analysis essential for establishing a spirapril production plant. It encompasses all critical aspects necessary for spirapril production, including the cost of spirapril production, spirapril plant cost, spirapril production costs, and the overall spirapril production plant cost. Additionally, the study covers specific expenditures associated with setting up and operating a spirapril production plant. These encompass production processes, raw material requirements, utility requirements, infrastructure needs, machinery and technology requirements, manpower requirements, packaging requirements, transportation requirements, and more.
Spirapril is a simple ACE inhibitor medicine that turns into its active form called spiraprilat inside the body. It mainly treats high blood pressure, or hypertension, by stopping an enzyme that makes angiotensin II. This lets vessels relax, drops blood pressure safely, and makes the heart work less hard. It is also used for heart failure to ease symptoms like swelling and tiredness by improving blood flow. It is taken as a pill once a day, which can lower top blood pressure by 10 to 18 points and bottom by 7 to 13 points. Its common side effects include dry cough, dizziness, headache, fatigue, nausea, rash, and low blood pressure.
The market for spirapril is driven by growing cases of hypertension around the world. The competition from newer drugs like lisinopril or enalapril affects its market dynamics. Its steady demand in generic forms for cost-sensitive regions treating high blood pressure and heart failure boosts its market. The ACE inhibitor market growth from rising hypertension cases and ageing populations fuels its demand. The low generic pricing, reliable API supply from limited manufacturers, and regulatory approvals in select EU countries affect industrial spirapril procurement. The hospital and pharmacy bulk buying, where alternatives are unavailable or costlier, influences its sourcing. Other factors like patent expiry long ago, minimal promotion, and preference for modern ARBs limit scalability and volume that impacts its demand.
Raw Material for Spirapril Production
According to the spirapril production plant project report, the key raw materials used in the production of spirapril include protected 4-oxoproline methyl ester, 1,2-ethanedithiol, boron trifluoride etherate, ethyl 2-oxo-4-phenylbutyrate, and L-alanine.
Production Process of Spirapril
The extensive spirapril production cost report consists of the following major industrial production process:
- From protected 4-oxoproline methyl ester: Spirapril is manufactured by first forming the spirocyclic core through thioacetalisation of a protected 4-oxoproline derivative. This is done using 1,2-ethanedithiol and a Lewis acid catalyst like boron trifluoride etherate in dichloromethane to yield (8S)-1,4-dithia-7-azaspiro[4.4]nonane-8-carboxylic acid hydrobromide after precipitation and filtration. Separately, the side chain N-(1-(S)-ethoxycarbonyl-3-phenylpropyl)-L-alanine is prepared via reductive amination of ethyl 2-oxo-4-phenylbutyrate with L-alanine using sodium cyanoborohydride in water or ethanol at neutral pH, followed by isolation. These two intermediates are then coupled using a standard peptide coupling agent, followed by filtration of byproducts, aqueous work-up, extraction into organic solvent, drying, and concentration to give spirapril free base.
Spirapril is a solid prodrug ACE inhibitor with molecular formula C22H30N2O5S2 and molecular weight of 466.6 g/mol (free base) or 503.1 g/mol (hydrochloride salt). It features a 1,4-dithia-7-azaspiro[4.4]nonane core with ethoxy-carbonyl-phenylpropyl and alanine substituents, showing 3 hydrogen bond donors, 8 acceptors, and a high rotatable bond count (10), which contributes to its flexibility. It has low water solubility (0.029 g/L), topological polar surface area of 147 Ų, and XLogP3, indicating moderate lipophilicity suitable for oral absorption. It is converted in vivo to active spiraprilat via ester hydrolysis. These physical and chemical properties make it useful as an ACE inhibitor medicine.
